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SURA PUBLICATION-TRIGONOMETRY-EXERCISE 3.5
- Find the values of cos 2A, A lies in the first quadrant, when cos A ...
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- Find the values of cos 2A, A lies in the first quadrant, when tan A =...
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- If theta is an acute angle, then find sin ((pi)/(4)-(theta)/(2)) whe...
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- If theta is an acute angle, then find cos ((pi)/(4) + (theta)/(2)), ...
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- If cos theta = (1)/(2)(a + (1)/(a)),show that cos 30 = (1)/(2) (a^(3) ...
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- Prove that cos 50 = 16 cos^(5)theta - 20 cos^(3) theta + 5 cos theta
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- Prove that sin 4alpha = 4 tan alpha (1 - tan^(2) alpha)/((1 + tan^(2) ...
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- If A + B = 45^(@) , show that (1 + tan A)( 1 + tan B) = 2
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- Prove that (1 + tan 1^(@)) (1 + tan 2^(@)) (1 + tan 3^(@))…. (1 + ta...
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- Prove that tan ((pi)/(4) + theta)- tan ((pi)/(4) - theta) = 2 tan 2 th...
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- Show that cot(7 (1)/(2)) = sqrt(2) + sqrt(3) + sqrt(4) + sqrt(6).
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- Prove that (1+sec 2 theta) (1+sec 4 theta)........(1+sec 2^(n) theta)=...
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- Prove that 32(sqrt(3)) sin"" (pi)/(48) cos"" (pi)/(48) cos"" (pi)/(24)...
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